comptia linux+ certification exam

CompTIA Linux+ Certification ExamCompTIA XK0-004

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QUESTION NO: 1

A systems administrator installed Git on a new workstation and wants to ensure all Git projects on this machine are initialized with the same username and email address. Which of the following should the administrator use to meet this goal? (Choose two.)

A. git config --global user.name = “James Doe”

B. echo ‘email.addr = “[email protected]”’ >> .git/.gitconfig

C. echo ‘username’ = “James Doe”’ >> .git/.gitconfig

D. git config username = “James Doe”

E. git config --global user.email = “[email protected]”

F. git config email.addr = [email protected]”

ANSWER: A E

QUESTION NO: 2

Which of the following configuration management tools is considered agentless?

A. Puppet

B. Salt

C. Ansible

D. Chef

ANSWER: C

Explanation:

Reference: https://www.intigua.com/blog/puppet-vs.-chef-vs.-ansible-vs.-saltstack

QUESTION NO: 3

A Linux administrator needs to remove a USB drive from a system. The unmount command fails, stating the device is busy. Which of the following commands will show the reason for this error?

A. lsusb | grep /mnt/usb

B. mount | grep /mnt/usb



C. ps aux | grep /mnt/usb

D. lsof | grep /mnt/usb

ANSWER: D

Explanation:

Reference: https://www.systutorials.com/force-linux-unmount-filesystem-reporting-device-busy/

QUESTION NO: 4

A junior Linux administrator is performing version control on a Git repository. The administrator is given a list of tasks to complete:

List the currently installed Git release.

Show the status reporting of the clone.

Which of the following commands would allow the administrator to complete these tasks? (Choose two.)

A. git clone --progress

B. git clone --recursive

C. git --help

D. git clone --dissociate

E. git --version

F. git clone --shared

ANSWER: A C

QUESTION NO: 5

A Linux administrator has configured a Linux system to be used as a router. The administrator confirms that two network adapters are properly installed and functioning correctly. In addition, the output of the iptables –L command appears to contain a complete firewall configuration.

Which of the following commands does the administrator need to issue for the router to be fully functional?

A. echo “1” > /proc/sys/net/ipv4/ip_forward

B. echo “0” > /proc/sys/net/ipv4/tcp_abort_on_overflow

C. echo “0” > /proc/sys/net/ipv4/max_connections



D. echo “1” > /proc/sys/net/ipv4/ip_default_ttl

ANSWER: A

QUESTION NO: 6

Which of the following will boot from a network-hosted ISO image at power on?

A. PXE

B. FTP

C. iSCSI

D. NFS

ANSWER: A

QUESTION NO: 7

Which of the following are classified as Linux GUI servers? (Choose two.)

A. VNC

B. KDE

C. Gnome

D. Wayland

E. MATE

F. X11

ANSWER: D F

QUESTION NO: 8

A junior systems administrator is diagnosing an issue with latency. The administrator issues the command mtr www.comptia.org at a terminal and receives the following output:



Given this scenario and the output, which of the following should be reported to the network team for investigation? (Choose two.)

A. Host 1 is set to filter ICMP reply packets.

B. Host 1 is set to filter ICMP echo packets.

C. Host 2 is experiencing high packet loss, indicating the link is overloaded.

D. Host 2 is experiencing low bandwidth, indicating the ISP is blocking traffic.

E. Host 3 is set to filter ICMP reply packets.

F. Host 3 is set to filter ICMP echo packets.

ANSWER: C F

QUESTION NO: 9 - (SIMULATION)

SIMULATION

Find the file named core and remove it from the system.

INSTRUCTIONS

Type “help” to display a list of available commands.

If at any time you would like to bring back the initial state of the simulation, please click the Reset All button.



ANSWER: See explanation below.

Explanation:

Reference: https://www.cyberciti.biz/faq/linux-unix-how-to-find-and-remove-files/

QUESTION NO: 10

A systems administrator notices several intensive tasks executing from users Joe and Ann. These processes are impacting server operations but must be allowed to continue running.

Which of the following commands should the systems administrator run to reduce the impact on the server?

A. pkill -u joe ann

B. renice 11 -u joe ann

C. nohup -u joe ann



D. strace -u joe ann

ANSWER: B

Explanation:

Reference: https://www.computerhope.com/unix/renice.htm#:~:text=On%20Unix%2Dlike%20operating%20systems,the%20Linux%20version%20of%20renice

QUESTION NO: 11

A junior systems administrator is scanning archive.tar files with an antivirus scanner. The administrator is given the following tasks:

List all files that are in the archive.tar files. Extract all files from the archive.tar files.

Which of the following actions should be performed to meet these requirements? (Choose two.)

A. tar -tvf archive.tar

B. tar -xf archive.tar

C. tar -A archive.tar

D. tar -av archive.tar

E. tar -r archive.tar

F. tar -uvz archive.tar

ANSWER: A B

Explanation:

Reference: https://linuxize.com/post/how-to-create-and-extract-archives-using-the-tar-command-in-linux/

QUESTION NO: 12

An administrator needs to change the IP address on a server remotely. After updating the configuration files, a network restart is needed. However, the administrator fears that when the network connection drops, the network restart script will be killed before the new IP address has been set.

Which of the following commands would prevent the script from being killed?

A. nohup service network restart

B. service network restart &

C. echo “service network restart” | at now



D. bg service network restart

ANSWER: A

QUESTION NO: 13

A Linux administrator needs to schedule a cron job to run at 1:15 p.m. every Friday to report the amount of free disk space on the system and to send the output to a file named “freespace”. Which of the following would meet this requirement?

A. 13 15 * * 5 df > /freespace

B. 15 13 * * 5 df > /freespace

C. 15 1 * * 6 df > /freespace

D. 15 13 6 * * df > /freespace

ANSWER: A

QUESTION NO: 14

A junior systems administrator is configuring localization option environment variables. The administrator is given a checklist of tasks with the following requirements:

View current settings of the LC_ALL environment variable only. Modify the LANG environment variable to US English Unicode.

Given this scenario, which of the following should be performed to meet these requirements? (Choose two.)

A. echo $LC_ALL

B. locale

C. cat $LC_ALL

D. export LANG = en_US.UTF-8

E. export $LANG = en_US.UTF

F. stty

ANSWER: B D

Explanation:

Reference: https://www.tecmint.com/set-system-locales-in-linux/



QUESTION NO: 15 - (DRAG DROP)

DRAG DROP

The lead Linux admin has added a disk, /dev/sdd, to a VM that is running out of disk space. Place the following steps in the correct order from first (1) to last (4) to add the disk to the existing LVM.

Select and Place:

ANSWER:



Explanation:

Reference: https://www.rootusers.com/how-to-increase-the-size-of-a-linux-lvm-by-expanding-the-virtual-machine-disk/


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